1 /* Check that closing a pipe with a nonempty buffer works.
3 #output: got: a\nexit: 0\n
15 #include <sys/types.h>
26 char *buf = malloc (pipemax * 100);
34 /* The first write should go straight through. */
35 if (write (pip[1], buf, 1) != 1)
40 /* The second write should only successful for at most the PIPE_MAX
41 part, but no error. */
42 ret = write (pip[1], buf, pipemax * 10);
43 if (ret != 0 && ret != pipemax - 1 && ret != pipemax)
45 fprintf (stderr, "ret: %d\n", ret);
62 /* We need to turn this off because we don't want (to have to model) a
63 SIGPIPE resulting from the close. */
64 if (signal (SIGPIPE, SIG_IGN) != SIG_DFL)
71 fprintf (stderr, "Bad pipe %d\n", retcode);
78 pipemax = fpathconf (pip[1], _PC_PIPE_BUF);
83 fprintf (stderr, "Bad pipemax %d\n", pipemax);
87 pid = clone (process, (char *) stack + sizeof (stack) - 64,
88 (CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND)
92 fprintf (stderr, "Bad clone %d\n", pid);
96 while ((retcode = read (pip[0], buf, 1)) == 0)
101 fprintf (stderr, "Bad read 1: %d\n", retcode);
105 printf ("got: %c\n", buf[0]);
107 if (close (pip[0]) != 0)
109 perror ("pip close");
113 retcode = waitpid (pid, &st, __WALL);
115 if (retcode != pid || !WIFEXITED (st))
117 fprintf (stderr, "Bad wait %d:%d %x\n", pid, retcode, st);
122 printf ("exit: %d\n", WEXITSTATUS (st));